Valentine



V. H. HALLOOK. Damper-Regulator for Steam-Boilers.

No. 222,489. Patented Dec. 9, I879.

Damon re urner r ,HALLQQK, 0 BROOK YN, NEW YORK- lM PROVEM EN=T N D-AM P E B-REG U LATORS F0 R STEAM-B0 LERS.

Specification formingpartof Letters Patent No. 222,489, dated December 9, 1879; application filed October 30, 1879.

To all whom it may concern:

Be it known that I, VALENTINE H. HAL- LOOK, of Brooklyn, in the county of Kings and State of NewYork, have invented a new and useful Improvement in Damper-Regulators for A steam-boiler, whereby the damperin the smokefiue is set according to the. pressure of the steam to regulate the draft, as hereinafter fully described, and pointed out in the claims.

In the drawings, the letter A designates a cylinder, which is held in a vertical position upon a bracket, B, secured to a post, G, or to the wall. This cylinder Areceives steam from the boiler to which the apparatus is applied, and in the same worksa plunger or piston, D, the latter being inserted into the cylinder through its upper end, where the cylinder is provided with a packing-rin g, a.

The letter E designates a damper, which is arranged in a flue, F, serving to carry off the smoke from the furnace of the boiler. To the pivot of this damper E and externally of the flue F is secured a segment, I), to which is fastened one end of a cord or chain, 0, which runs over a pulley, d, and. the other end of which is fastened to system rising from the plunger D. In this manner the damper E connects with the plunger D, and their arrangement is such that when the plunger is in a lower position the damper is open, as shown. To the segment b is also fastened one end of a cord or a ure of steam rises the plunger Dis thereby forced upward and the cord 0 is slackened, so that the segment 12 may follow the action of the weight g, which is to turn the segment and thereby close the damper. By this means the draft through the boiler -furnace is retarded and the fire is lowered, so that the pressure of steam falls, and when this has taken place the plunger D returns to a lower position, and the segment b is moved back by the tension of the cord 0 to reopen the damper.

The plunger D may be arranged to resist or balance a fixed pressure of steam by its inherent gravity; but I prefer to use weights H for this purpose, in order that the power of the plunger may be increased or diminished at will. These weights H are suspended from the plunger D by a frame consisting of crossheads t" and connecting-rods j.

As the plunger D rises and descends with the rise and fall of the steam-pressure, it is expedient or desirable to gradually increase and lessen the weight thereof, in order that the damper E may not he suddenly closed or opened. To this end I connect with the plunger D a self-adjusting weight, K, consisting, in this example, of a chain, which is linked to the weight-frame i j, and which partially or wholly rests on the ground or floor when the plunger is in a lower position. When the plunger D rises the chain-weightK is thereby gradually lifted from the floor, and the power or resistance of the plunger is increased to a corresponding degree, while when the plunger descends said weight takes its place on the floor, link by link, and a corresponding load is taken off the plunger.

For the purpose of supplying the cylinder A with steam, I make use of a feeder, L, which communicates with the cylinder at or near the bottom through a pipe, m, having a suitable stop-cock, and from the top of which extends a pipe, n, to connect with the boiler. The live steam entering the feeder L condenses and cools off, and the condensed steam enters the cylinder A under the pressure of the live steam through the pipe m. The advantage gained by this arrangement is that the cylinder A remainscool and the packing-ring a is not liable to be affected by the steam; but it is obvious that the feeder may be omitted and I weighted plunger working in the cylinder, at

the live steam conducted directly to the cylinder, so as to act directly on the plunger.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination of a steam-cylinder, a plunger working in the cylinder, a self-adjusting weight acting on the plunger, a damper connecting with the plunger, and a weight or spring connecting with the damper, all adapted to operate substantially as described.

2. The combination of a steam-cylinder, a

feeder communicating with the cylinder, a damper connecting with the plunger, and a weight or spring acting on the damper, all adapted to operate substantially as described. In testimony that I claim the foregoing I have hereunto set my hand and seal this 20th day of October, 1879.

VALENTINE H. HALLOOK. [L. 8.] Witnesses:

W. HAUFF, CHAS. WAHLERS. 

